Valve mechanism



0st. 6, 1931. w, s, VALMQRE 1,826,158

` VALVE MEcHANIsM Filed Dec. '7. 1928 Patented 9ct. 6, 1931 l'l'E STATES rien VALVE MEGHAN-'ISM Application filed eeember 7, 1928. Serial No. 324,423.

This invention relates generally to a valve mechanism and more particularly to a valve mechanism which is especially adapted for use in connection with a radiator or other 5j portion of a heating unit.

The main object of t ie invention is to provide a valve mechanism which requires no packing or glands and which will eilectively prevent leakage.

A further object of the invention is to providea valve mechanism in which the valve proper is actuated by means of a flexible diaphragm and in which the valve seat is ot such size as to permit theV maximum dow through the valve when the valve is opened or removed from its seat a comparatively short distance.

A still further object ot the invention is to provide a valve mechanism of the character described which is simple in construction, comprises comparatively t'ew parts which are readily assembled and disassembled and is well adapted for quantity production at comparatively low cost.

Further and more limited objects of the iuvention will appear as the description proceeds and by reference to the accompanying drawings in which Fig. 1 is a vertical sectional view of the valve body and valve actuating mechanism and F ig. 2 is a horizontal sectional view on the line QH@ of Fig. l.

Referring now to the drawings, the valve mechanism consists essentially ot a valve casing or body 1 having' an inlet passageway 2 leadino' thereinto and an outlet )assagewa 2D L/ 3 leading therefrom. The valve casing is provided with an annular upstanding projection l which provides a Valve seat. rlfhis valve seat Ll is considerably larger than either the inlet or outlet passageway and is adapted to receive a valve 5 thereon. The upper end ot the casing is open and is provided with an annular inwardly projecting ange or shoulder 6 which is adapted to receive thereon a diaphragm 7. The upper end or' the casing is interiorly threaded and adapted to receive therein a valve bonnet 8 which serves to hold the diaphragm in place. The valve bonnet 8 has a hollow annular upstanding portion 9 in which is slidably mounted a valve stem 10 comprising a. plug having a threaded opening or socket 11 therein. rlhe valve stem l() also has a projecting portion 12 thereon which extends throngh a centrally disposed opening in the diaphragm T and is threadedly secured to the valve 5, as shown most clearlv in F 1.

A washer 13 is interposed between the valve member o in the lower tace of the dia,- phragm. Threadedly secured in the socket 11 of the valve stem 10i is a member 11i having an annular flange or shoulder 15 thereon which has a working lit within the hollow annular projection 9 and which projects a through an opening in the top portion thereof. The upper end of the member is square or hexagonal in cross section and re ceives thereover a valve actuating lever 16 which is secured thereto by means or" a disk A 17 and screw 18. A washer 19 is interposed 7d between the valve actuating lever lG and the top portion of the projection 9. rllhe inner face ot the valve bonnet 8 is disheiL outwardly as shown most clearlykin Fig. 1 so that when the diaphragm .is flexed outwardly to open the valve a reinforcement will be provided to prevent undue strain upon the diaphragm.

As the valve 5 and valve stem 10 are rigidly and non-rotatably connected with the diaphragm, it will be seen that when the member 14- is rotated by means of the valve lever 16, the valve stem 10 will be moved either inwardly or outwardly, depending upon the direction of rotation of the `valve lever, and thus cause a `dering of the diaphragm either inwardly or outwardly. The valve bonnet 8 secures the diaphragm in place and provides a construction in which no leakage will occur and which will render unnecessary any packing or glands.

The valve seat l is of greater diameter than either the inlet passageway 2 or the outlet passageway 3 and is therefore of greater cross sectional area thereby permitting a maximum ilo-w through the casing when the valve is moved 'from its seat only a relatively short distance. F or example, it the inlet and outlet passageways are inch openings, the valve seat should be 1% inches in diameter. llith these dimensions, it will be necessary ifea to lift the valve from its seat only 5% of an inch to permit maximum lovv through the casing. It has been found that these proportions give the most efficient results. The shape ol the inner face of the valve bonnet also serves to provide a construction in which the diaphragm is reinforced When the valve is opened and also prevents the diaphragm from being flexed outwardly too far.

It will now be clear that I have provided a valve mechanism which vill accomplish the objects of the invention as hereinbeiore stated. Various changes may be made in the details ol construction and in the shape, size and arrangement of the various parts Without departing from the spirit of my invention and it is to be understood that the embodiment of the invention herein disclosed is merely illustrative and not to be considered in a limiting sense and my ivention is to be limited only in accordance with the scope ol the appended claims.

Having thus described my invention, What I claim is:

A valve mechanism comprising a casing having a valve chamber therein, an inlet passageway leading into said valve chamber, an outlet passageway leading from said valve chamber, an annular valve seat formed integral with .said easing, a valve adapted to be moved into engagement with said valve seat, a peripheral shoulder formed on said valve casing and defining a diaphragm seat, a dia phragm. resting on said diaphragm seat, a valve bonnet comprising a plug thrcadedly secured in the upper end of said casing and holding said diaphragm in place and having a centrally disposed hollow annular, u pst-an ding portion, a plug slidably and non-rotatably mounted in said portion and having a threaded opening therein, said plug extending through said diaphragm and threadedly connected with said valve, a valve stem threadedly secured in said plug and having an annular flange thereon having a working fit within the upstanding portion ot said plug and a valve handle non-rotatably secured to said valve stem.

In testimony whereof, I hereunto a'liX my signature.

IVM. S. VALMORE. 

